Practice Questions for Arithmetic - Average

1. PE 4 - Average | Arithmetic - Average

Anjali wrote the first few natural numbers on black board but missed one of the numbers. She later calculated the sum of all the numbers that she wrote and divided it by what she thought was the number of numbers she had written. If the result she thus obtained was $38 \frac{1}{11}$ , find the number that she forgot to write.

(a)
71
(b)
70
(c)
69
(d)
None of these

2. PE 4 - Average | Arithmetic - Average

After an election, the candidates were ranked in decreasing order of votes. Every citizen voted for a single candidate. The three highest ranked candidates together got 30% of the votes. The six lowest ranked candidates together got 45% of the votes. How many candidates were neither in the top two or the bottom five?

(a)
2
(b)
3
(c)
4
(d)
Cannot be determined

3. PE 4 - Average | Arithmetic - Average

There are 3 sections A, B and C for eighth standard in XYZ school. In a test the average marks of sections A and B together is 56. The average marks of sections B and C together is 60. The average marks of sections C and A together is 64. Find the range of average marks of all the three sections combined?

(a)
[58, 62]
(b)
(56, 64)
(c)
(58,62)
(d)
Cannot be determined

PE 4 - Average | Arithmetic - Average

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